Navigation and yacht racing solutions


Important note

Whilst racing, weather data or services such as routing that are not free of charge or easily available to all boats are not allowed by Rule 41(c) (outside help) of the RRS. See Case 120 in the Case book. However, Case 120 clarifies that rule 41c may be changed for any particular race by the notice of race and sailing instructions.

Expedition integrated weather & oceanographic data

Saildocs - GFS, WW3, NOGAPS, COAMPS & RTOFS. Designed to satisfy Rule 41(c).
Great Circle - Many global & regional models. As used by the Volvo Ocean Race.
GLERL - Free Great Lakes winds & currents
Global marine networks - HYCOM currents and WW3 data
MailASail - GFS
NOAA - High resolution GFS, GEFS, NAM, RTOFS etc. NAM is often the best US data
Norwegian weather office - Free high resolution models for northern Europe
Ocens - GFS, NMG, WW3, HYCOM and RTOFS
PredictWind - High resolution models
SKIRON - Free high resolution European models
Theyr - Global and high resolution models
Windria - Global and regional high resolution models

Bundesamt für Seeschifffahrt und Hydrographie - Free Baltic & North sea tidal currents
Proudman - UK, North Sea, Meditteranean & Arabian Gulf tidal currents
SHOM - Tidal currents for the French coast
Tidetech - Global ocean & tidal tidal currents
Winning Tides - Solent (UK) tidal currents

Free weather & oceanographic grib data

DWD - OpenData, COSMO & ICON Europe & world
ECMWF, reanalysis & ERA Interim
Environment Canada - GEM, global & high resolution North American models
Meteo France - Arpege (Global & Europe) & Arome (France)
MeteoConsult - High resolution models for Europe and Mediterranean
NCAR/UCAR Research data archive
NOAA, RTOFS, WW3, Reanalysis, Degrib and many other models
SailFlow or SailFlow - High resolution GFS, NAM & WRAMS models for the US
Sailing Weather Service - SWS, NAM and GFS
UCAR AMPS - Antarctic Mesoscale Prediction, including NZ & Drake Passage
Weather365 - 0.1 & 0.25 degree ETA model data for many European locations

Hong Kong tidal stream data
OSI Sea ice concentration

Subscription grib data

BOM - Australia
gribfiles.com - Many models
Norwegian weather office
Previmeteo - WRF user selectable modelling
Sailtactics - wind and currents for San Francisco & The Solent
WetterWelt GmbH

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